Improvement in bracing and supporting card-teeth



UNITED STATES PATENT OEEICE.

CORNELIUS SPEER, OF NEW YORK, N. Y.

IMPROVEMENT IN BRACING AND SUPPORTING CARD-TEETH.

Specification forming part of Letters Patent No. 9,411 dated November 16, 1852.

T0 @ZZ whom t may concern:

Be it knownthat I, CORNELIUS SPEER, of

I the city, county, and State of New York, have discovered and invented a new and useful improvement in the means of bracing and supporting teeth employed for burring wool and for ginning, cleaning, and carding cot-- ton, wool, and other fibrous substances; and I do hereby declare the following to be a full and clear description of the same.

The nature of my invention consists in the application of a composition of matter, consisting' of glue, sal-ammoniac, and tine particles of iron, to the front side of the leather iillet holding the card-teeth, for the purpose of bracing and supporting the teeth employed in ginning cotton and cleaning wool, rite., by employing it to fill the spaces between and among the teeth to within a short distance of the points of the teeth to brace and support them, and at the same time to form a surface below the points of the teeth for the fibers of material to rest on when the fibers in the process of cleaning or ginning are drawn below the surface of the cylinder.

To enable others to understand and make and use my said improvement,I will proceed to describe it in detail, referring to the drawings hereto annexed, which are to be received as a part of this specification, and in which like letters refer to like parts.

My above-mentioned composition of matter is compounded of iron filings, or iron reyduced to small particles, sal-ammoniac, and

glue, and the proportions I have found to answer best are: one quart of boiled glue, one quart of iine iron filings, or iron reduced to small particles, and one pennyweight of salammoniac, weighed in a dry state. In compounding these materials I pulverize the salammoniac a-nd mix it with the iron, and then boil the glue until it attains a thick fluid state. I then pour the mixture of iron and sal-ammoniac into the glue and stir them well together.

The above proportions of materials I have found best; but they may be varied and still answer a good purpose, and I do not, therefore, limit myself to these exact proportions.

This composition, after being prepared as above described, and While remaining hot and in a thick iiuid state, is to be filled in among the teeth by any means which may be preferred. A convenient mode of illing it in, and the one which I adopt, is to set and arrange the teeth in the position they are intended to stand after they are braced and secured by the hardeningof the filling, and then pour the composition among them. If the teeth are to be on a cylinder or are to form a cylinder, as in case of the card-teeth of a common carding-machine, or the wiretoothed cylinders for ginning cotton or burring Wool, the teeth must be arranged upon the cylinder by winding the fillets, or otherwise, by any known means, and when arranged in the position in which they are to stand for use I pour my said composition while hot, and consequently in a Huid state, between and among the teeth until they are filled up to near their points, as shown at a, which represents the filling in the drawings, l) being the teeth; and in case the composition should not run freely andA evenly among the teeth the operation of filling may be aided by rubbing a brush or plane surface over it to force the composition down between and among the teeth. It should then be allowed to cool, when it becomes hard,

and forms a durable and excellent brace and supportato the teeth and` surface for the fibers to rest on, Yand superior to any which I have ever before known or heard of.

Figure l of the drawings is a sectional view of a cylinder with the teeth set and filled with the composition. c is a cylinder of wood or other material. d is the leather in which the teeth are set and wound on the cylinder. The dark coloring a is the composition filling, and e e are the spaces between `the teeth above the filling.

CORNELIUS SPEER. WVitnesses:

MILES B. ANDEUS, C. B. WHEELER. 

